神府矿区活鸡兔矿井烧变岩水害防治工程研究

Study on Engineering of Prevention and Cure on Groundwater Inundation of Burnt Rock in Huojitu Mine of Shenfu Mining Area

活鸡免矿井是神木北部矿区首批建设的现代化煤矿之一,于2000年12月投产,生产原煤800万t/a。由于该矿井范围内煤层上部(垂距21～30m)赋存有10.97km2的烧变岩裂隙含水层,其静储量高达130万m3,单孔涌水量可达2000m3/d,对煤矿的安全开采构成了巨大威胁。同时,烧变岩裂隙水又是可供矿区开发利用的宝贵水资源,为消除水害隐患及合理利用地下水资源,采用了钻孔泄水方式将烧变岩裂隙水引入矿区供水系统,既保证了矿井的安全生产,又取得了巨大的经济效益与环境效益。

Huojitu mine is the one of modernized coal mine the first stage of construction in Northern Shenmu mining area,put into production in December 2000,and the output of raw coal 8million T.In the u pper part of coal layer(vertical interval 21-30m),there is 10.97km 2 fracture aquifer of burnt rock,its o utflow of single hole 2000m 3 /d,so formed serious threat for the mining safety of coal.Meanwhile the fracture water of burn t rock are also precious water resour ces applied for mining area.In order to eliminate hidden danger of inundation and reasonable applic ation of groundwater resources,div ert fractune water of burnt rock into water supply system of mining area with drill hole sluicing.It' s both to guarantee safety of mining p roduction,and to obtain great benefits of economy and environment.